ATA6612C View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
ATA6612C
Atmel Corporation
'ATA6612C' PDF : 312 Pages View PDF
3.3.23 Voltage Regulator
The voltage regulator needs an external capacitor for compensation and for smoothing the disturbances from the
microcontroller. It is recommended to use an electrolytic capacitor with C ≥ 1.8µF and a ceramic capacitor with C = 100nF.
The values of these capacitors can be varied by the customer, depending on the application.
The main power dissipation of the IC is created from the VCC output current IVCC, which is needed for the application. In
Figure 3-8 the safe operating area is shown.
Figure 3-7. VCC Voltage Regulator: Ramp Up and Undervoltage Detection
VS
12V
5.5V
VCC
5V
Vthun
NRES
5V
tVCC
tReset
t
tres_f
t
t
Figure 3-8. Power Dissipation: Safe Operating Area VCC Output Current versus Supply Voltage VS at Different
Ambient Temperatures
90
80
70
Tamb = 100°C
60
Tamb = 105°C
50
40
Tamb = 110°C
30
Tamb = 115°C
20
10
0
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
VS (V)
For programming purposes of the microcontroller it is potentially necessary to supply the VCC output via an external power
supply while the VS pin of the system basis chip is disconnected. This will not affect the system basis chip.
ATA6612C/ATA6613C [DATASHEET]
17
9111L–AUTO–11/14
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